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发明名称
PASTY EMULSION FROM NATURAL OR ARTIFICIAL BITUMEN OR TAR
摘要
申请公布号
CA300450(A)
申请公布日期
1930.05.20
申请号
CAD300450
申请日期
申请人
FREDERICK WILLIAM ATACK
发明人
HERMANN PLAUSON
分类号
主分类号
代理机构
代理人
主权项
地址
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